Couples may file jointly, regardless of where they live

Share via e-mail

WASHINGTON — All legally married same-sex couples will be recognized for federal tax purposes, regardless of whether the state where they live recognizes the marriage, the Treasury Department and the Internal Revenue Service said Thursday.

It is the broadest federal rule change to come out of the landmark Supreme Court decision in June that struck down the 1996 Defense of Marriage Act, and a sign of how quickly the government is moving to treat gay couples in the same way that it does straight couples.

The June decision found that same-sex couples were entitled to federal benefits but left open the question of how Washington would administer them. The Treasury Department answered some of those questions Thursday. As of the 2013 tax year, same-sex spouses who are legally married will not be able to file federal tax returns as if either were single. Instead, they must file together as “married filing jointly” or individually as “married filing separately.”

Their address and the site of their wedding does not matter, as long as the marriage is legal. A same-sex couple who marry in New York and move to Alabama are treated the same as a same-sex couple who marry and live in Massachusetts.

“Today’s ruling provides certainty and clear, coherent tax-filing guidance for all legally married same-sex couples nationwide,” Treasury Secretary Jacob J. Lew said. “This ruling also assures legally married same-sex couples that they can move freely throughout the country knowing that their federal filing status will not change.”

“Committed and loving gay and lesbian married couples will now be treated equally under our nation’s federal tax laws, regardless of what state they call home,” said Chad Griffin, the president of the Human Rights Campaign.

But the Treasury decision could have ramifications for many gay couples’ tax liabilities, said Roberton Williams of the nonpartisan Tax Policy Center in Washington. Couples with similar incomes often pay the “marriage penalty,” with their tax liability as a couple being much higher than it would be if they were single.

At the same time, same-sex couples will also be able to file amended returns for certain prior tax years, meaning that many couples might be eligible for refunds. Couples do not have to file amended returns if they do not want to, a senior Treasury official said, meaning that couples who might pay the marriage penalty would not owe back taxes.

But the ruling creates complications for same-sex couples who live in any of the 37 states that do not recognize their marriages. Previously, such couples filed federal and state tax returns as individuals. Now, they will have to file their federal returns as other married couples do, but may be required to file state returns as individuals.

“There’s going to be a cumbersome workaround,” said Nanette Lee Miller of Marcum LLP, a public accounting firm. She sees it as a paperwork issue more than a financial issue.

States might also respond to the federal ruling with changes of their own.

“Most state income tax regimes begin with federal taxable income as the starting point,” Marvin Kirsner, a tax lawyer at Greenberg Traurig, said in an e-mail. “These state taxing authorities will have to figure out how to deal with a same-sex married couple who file a joint income tax return for federal tax purposes.”

Separately, the Health and Human Services Department said Thursday that Medicare would extend certain key benefits to same-sex spouses, “clarifying that all beneficiaries in private Medicare plans have access to equal coverage when it comes to care in a nursing home where their spouse lives.”

‘Committed and loving gay and lesbian married couples will now be treated equally.’ — Chad Griffin, Human Rights Campaign

But federal agencies are not moving in lock step. Instead, they are creating a patchwork of regulations affecting gay and lesbian couples,and they may be raising questions about discrimination and fairness in the way that federal benefits are distributed.

Medicare and Treasury officials have said they would use a “place of celebration” standard for determining whether gay couples are eligible for benefits. That means same-sex couples would receive benefits as long as they are legally married, regardless of where they live.

But the Social Security Administration is now using a “place of residence” standard in determining spousal benefits, and a gay couple in Alabama might not receive the same benefits as a gay couple in New York until final determinations are made or Congress acts. The Obama administration has pushed federal agencies to ensure that the Supreme Court’s ruling is carried out quickly and smoothly.

“It would be nice if they were consistent,” Miller said. Creating federal regulations is a process and could change, she said.

BostonGlobe.com complimentary digital access has been provided to you, without a subscription, for free starting today and ending in 14 days. After the free trial period, your free BostonGlobe.com digital access will stop immediately unless you sign up for BostonGlobe.com digital subscription. Current print and digital subscribers are not eligible for the free trial.

Thanks & Welcome to Globe.com

You now have unlimited access for the next two weeks.

BostonGlobe.com complimentary digital access has been provided to you, without a subscription, for free starting today and ending in 14 days. After the free trial period, your free BostonGlobe.com digital access will stop immediately unless you sign up for BostonGlobe.com digital subscription. Current print and digital subscribers are not eligible for the free trial.